Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Fair

70°F

21°C

Humidity 83%
Wind Speed Calm
Barometer 29.99 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 20 Jun 9:15 am EDT
Extended Forecast for

3 Miles SE Casco MI

Extreme Heat Watch June 21, 08:00am until June 24, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch
  • Today

    Today: A chance of showers, with thunderstorms also possible after 2pm.  Partly sunny, with a high near 81. West southwest wind 6 to 9 mph.  Chance of precipitation is 50%.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: A chance of thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am.  Mostly cloudy, with a low around 67. South southeast wind around 7 mph.  Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 10am.  Partly sunny, with a high near 88. South southwest wind 8 to 15 mph, with gusts as high as 24 mph.  Chance of precipitation is 30%.

    High: 88 °F

    Chance
    T-storms then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 95. Southwest wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 95 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 91.

    High: 91 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

Today
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 81. West southwest wind 6 to 9 mph. Chance of precipitation is 50%.
Tonight
A chance of thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 67. South southeast wind around 7 mph. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms before 10am. Partly sunny, with a high near 88. South southwest wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 76. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Sunday
Sunny and hot, with a high near 95. Southwest wind 10 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny and hot, with a high near 95.
Monday Night
Mostly clear, with a low around 73.
Tuesday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91.
Tuesday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Casco MI
 42.74°N 82.64°W (Elev. 623 ft)
4:24 am EDT Jun 20, 2025
9am EDT Jun 20, 2025-6pm EDT Jun 26, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database